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1576 18 218 — ADAPTER,STRAIGHT,PIPE TO BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

1576 18 218: ADAPTER,STRAIGHT,PIPE TO BOSS.

The ADAPTER,STRAIGHT,PIPE TO BOSS is a the manufacturer industrial component. Key specifications include material: STEEL COMP 316 OVERALL, flow_angle: 90.0 DEGREES, leg_length: 1.359 INCHES NOMINAL ALL ENDS IN, thread_class: 3B ALL ENDS, connection_type: THREADED INTERNAL BOSS ALL ENDS, connection_style: GASKET SEAL (BOSS) ALL ENDS. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-929-0600, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
1576 18 218
NSN: 4730-00-929-0600
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: A0199 — LEONARDO S.P.A. - ELECTRONICS DIVISION - DEFENCE BUSINESS AREA (ITA)
SPECIFICATIONS
materialSTEEL COMP 316 OVERALL
flow_angle90.0 DEGREES
leg_length1.359 INCHES NOMINAL ALL ENDS IN
thread_class3B ALL ENDS
connection_typeTHREADED INTERNAL BOSS ALL ENDS
connection_styleGASKET SEAL (BOSS) ALL ENDS
surface_treatmentPASSIVATE OVERALL
nominal_thread_size1.062 INCHES ALL ENDS IN
thread_quantity_per_inch12 ALL ENDS
thread_series_designatorUNIFIED NATIONAL JOINT (UNJ) ALL ENDS
specification/standard_data81343-AS5190 GOVERNMENT SPECIFICATION AND 81343-AS4875 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
material_document_and_classificationQQ-S-763,CL 316 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN4730-00-929-0600
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1576 18 218 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
FLOW ANGLE: 90.0 DEGREES
•
CONNECTION STYLE: GASKET SEAL (BOSS) ALL ENDS
•
CONNECTION TYPE: THREADED INTERNAL BOSS ALL ENDS
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763,CL 316 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
LEG LENGTH: 1.359 INCHES NOMINAL ALL ENDS IN
•
NOMINAL THREAD SIZE: 1.062 INCHES ALL ENDS IN
•
SPECIFICATION/STANDARD DATA: 81343-AS5190 GOVERNMENT SPECIFICATION AND 81343-AS4875 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
•
SURFACE TREATMENT: PASSIVATE OVERALL
TECHNICAL CHARACTERISTICS
FLOW ANGLE90.0 DEGREES
CONNECTION STYLEGASKET SEAL (BOSS) ALL ENDS
CONNECTION TYPETHREADED INTERNAL BOSS ALL ENDS
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763,CL 316 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
LEG LENGTH1.359 INCHES NOMINAL ALL ENDS IN
NOMINAL THREAD SIZE1.062 INCHES ALL ENDS IN
SPECIFICATION/STANDARD DATA81343-AS5190 GOVERNMENT SPECIFICATION AND 81343-AS4875 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
SURFACE TREATMENTPASSIVATE OVERALL
THREAD CLASS3B ALL ENDS
THREAD QUANTITY PER INCH12 ALL ENDS
SUBSTITUTES & CROSS-REFERENCES 5
AN939K12Reference document
Same NSN cross-reference
Reference document — Secondary reference
137618599Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
MIL-F-5509Reference document
Same NSN cross-reference
Reference document — Secondary reference
4730PL0801107Reference document
Same NSN cross-reference
Reference document — Informative reference only
AS5190Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1576 18 218?
1576 18 218 is a ADAPTER,STRAIGHT,PIPE TO BOSS.
What parts can replace 1576 18 218?
There are 5 known substitutes for 1576 18 218: AN939K12, 137618599, MIL-F-5509 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1576 18 218?
1576 18 218 is cataloged in the U.S. Government catalog under NSN 4730-00-929-0600. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.